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Query Processor The query language processor is responsible for taking query language statements or shifting them from the English-like syntax of the query language to a form
What are the storage types? The storage types are: a) Volatile storage b) Nonvolatile storage
external and internal mapping with examples
What are the comparison operator in SQL? Comparison operator in SQL are =, LIKE and BETWEEN
what problems are raised by the database? why is it so controversial? why is data quality an issue?
External failure : A failure can also result because of an external cause, such as earthquakes, fire, floods, etc. The database must be duly backed up to avoid troubles occurring d
Define the terms i) Entity set ii) Relationship set Entity set: The set of all entities of the similar type is termed as an entity set. Relationship set: The set of all rela
why are older data models are being replaced by new data models
Fourth Normal Form (4NF) When attributes in a relation have multi-valued dependency, further Normalization to 4NF and 5NF are needed. Let us first find out what multi-valued d
What is a Transaction? A transaction is an event which happens on the database. Generally a transaction reads a value from the database or writes a value to the database. If y
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